在本论文中我们根据3GPP协议TR25.813,25.814，25.913和25.914的要求和参数，设计搭建了一个基于SC...

2005年电赛：简易逻辑分析仪 ，本人试验的，可惜知识培训-the year of 2005

EUROPEAN STANDARD EN 50221 Common Interface Specification for Conditional Access and other Digital Video Broadcasting Decoder Applications-EUROPEAN STANDARD EN 50221 Common Interfa ce Specification for Conditional Access and ot her Digital Video Broadcasting Decoder Applic ations

液晶屏TTL信号转成LVDS信号的方案，使用SN75LVDS81-LCD TTL signals into LVDS signals to switch programs, uses SN75LVDS81

文中详细介绍了SIP各个层次模块的功能和设计，描述了重要的协议流程 和设计方法，重点阐述了关键技术的使用和实现中需要解决的问题，最后设计了网 络拓扑对协议栈进行了功能测试，测试结果表明该 SIP 协议栈的实现完全满足 VoIP 网关对信令建链功能的需求。 -paper describes in detail the various levels of SIP module and functional design, Description of the important agreements and design process, focuses on the key technology use and realization of the need to address the problem, final design of the network topology of the protocol stack for functional testing, Test results show that the SIP protocol stack to achieve fully meet the VoIP Signaling Gateway to build the demand chain functions.

文中介绍一种不用光耦就可以实现隔离的方法-This paper introduces an optocoupler can be achieved without isolation method

利用通讯模块进行数据通信，就是将数据体作为短消息的内容，从发送方的通讯模块发送出去，通过短消息中心进行转发，接收方通讯模块收到此短消息后即存储在SIM卡上，模块外接的控制器（如单片机、计算机等）从模块中读取短消息后，根据需要将无用的信息去除，取出有效信息，然后将SIM卡中的短消息删除，这样就完成一次单向数据的传输。利用通讯模块的短消息方式实现数据的发送和接收具有通信成本低、系统容量大、抗干扰能力强等优点，而且短消息经过服务中心再到达目的地的特点使通讯模块无需24小时开机，降低了系统功耗，特别适合遥控、遥测、远程信息处理和通信等领域。-GSM

本课题设计的是一套计算机控制的温度、湿度实时监测与报警系统，可应用于多种需要采集温湿度数据的场合，本文完成了整个系统的软硬件设计。-design of this project is a computer-controlled temperature, humidity and real-time monitoring and alarm system, can be applied to various needs of temperature and humidity data acquisition occasions, we completed the whole system hardware and software design.

手机音腔设计资料给大家参考,希望对大家设计有帮助.-Mobile Audio cavity design information for your reference, we want to design helpful.

sd卡读卡器控制器资料,GL728PDF-sd card reader controller information, GL728PDF

ARM7嵌入式经典程序调试，很适合ARM初学者学习，欢迎下载交流。-ARM7 Embedded classic program debugging, it is suitable for beginners to learn ARM are welcome to download the exchange.